Use IntelliJ to generate class diagram

Question

How do I get IntelliJ 10.5 (on the Mac) to generate a class diagram showing all of the classes in my project? I'm sure I'm overlooking something obvious, but I can only get the "Show Diagram" feature to show one class at a time. (I also figured out how to add additional classes, but again, only one at a time.)

score 195 · Accepted Answer · edited Jan 15 '21 at 06:48

195

Use Diagrams | Show Diagram... from the context menu of a package. Invoking it on the project root will show module dependencies diagram.

If you need multiple packages, you can drag & drop them to the already opened diagram for the first package and press e to expand it.

Note: This feature is available in the Ultimate Edition, not the free Community Edition.

edited Jan 15 '21 at 06:48

SwissCodeMen

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answered Jan 20 '12 at 14:29

CrazyCoder

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Does this mean there's no plugins available for community version to generate class diagram, now and in the future? – Bruce Sun Sep 20 '16 at 03:50
@BruceSun not at the moment – CrazyCoder Sep 21 '16 at 00:09
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@CrazyCoder How do you use this to view a UML diagram for a class and it's edges, .. i am thinking find my nodes, dept 3 ... or all ... right now its pretty useless. it only shows class hiearchies, not what object it uses, and what those object in turn uses. This uml plugin is not useful. – mjs Dec 21 '16 at 21:03
Link down :-( could you fix it please? – Pipo Aug 03 '18 at 17:10
Upvote for the 'Note' part. – gfytd Feb 25 '23 at 03:05

score 74 · Answer 2 · edited May 08 '18 at 11:17

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IntelliJ IDEA 14+

Show diagram popup

Right click on a type/class/package > Diagrams > Show Diagram Popup...
or Ctrl+Alt+U
Show diagram (opens a new tab)

Right click on a type/class/package > Diagrams > Show Diagram...
or Ctrl+Alt+Shift+U

By default, you see only the classes/interfaces names. If you want to see more details, go to File > Settings... > Tools > Diagrams and check what you want (E.g.: Fields, Methods, etc.)

P.S.: You need IntelliJ IDEA Ultimate, because this feature is not supported in Community Edition. If you go to File > Settings... > Plugins, you can see that there is not UML Support plugin in Community Edition.

edited May 08 '18 at 11:17

Honza Zidek

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answered Nov 14 '14 at 09:04

ROMANIA_engineer

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Hi guys, I am using Intellij 15.0.2 and I want to view class diagram of my project, however I can not see the selection Diagrams/Show Diagram when I right click in a package or a class. Can anyone help me? – Ectoras Jan 13 '16 at 16:02
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@Ectoras , I suppose that you use Community Edition, not Ultimate. It is not available for Community Edition (see the P.S.: added in the post). I tested it in IntelliJ IDEA 15.0.2 Ultimate and it worked. – ROMANIA_engineer Jan 13 '16 at 23:39

score 63 · Answer 3 · answered Oct 28 '16 at 11:32

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You can install one of the free pugins - Code Iris.

PlantUML

Other tools of this type in the IntelliJ IDEA are paid.

I chose a more powerful alternative:
In Netbeans - easyUML
In Eclipse - ObjectAid, Papyrus, Eclipse Modeling Tools

I hope it will help you.

answered Oct 28 '16 at 11:32

Kas Elvirov

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`Code Iris` just stops my project to launch. Community version 2019.1. – WesternGun Oct 08 '19 at 13:21
@WesternGun i'm not surprised man. This tool with 3 stars rating... – Kas Elvirov Oct 08 '19 at 17:35
I installed PlantUML plugin, but do not know how to get started and use it. Please add that also – subject-q Jun 29 '20 at 05:01
looks like PlantUML is used to create class diagrams? I did not see any use case/instructions online where it can be used to generate class diagrams automatically. – Dwarakesh Pallagolla Sep 20 '20 at 08:42

score 17 · Answer 4 · edited Nov 14 '14 at 08:54

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Try Ctrl+Alt+U

Also check if the UML plugin is activated (settings -> plugin, settings can be opened by Ctrl+Alt+S

edited Nov 14 '14 at 08:54

ROMANIA_engineer

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answered Jan 20 '12 at 14:31

Mark van Venrooij

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score 6 · Answer 5 · answered Mar 14 '19 at 15:24

6

Use Intellij plugin Sketch It!.

answered Mar 14 '19 at 15:24

Rohit Bansod

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...which needs PlantUML plugin to visualize the diagram. With Community version 2019.1 it works, after installing Graphviz and adding `bin` to PATH. Windows 10. But, it only renders relationship in each package, not in the whole projects, thing that I expected, but thanks anyway. – WesternGun Oct 08 '19 at 14:04
sketch It is an amazing tool :》thanks – alen Apr 29 '22 at 05:43

score 2 · Answer 6 · answered Oct 21 '19 at 11:46

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Now there is an official way to add "PlantUML integration" plugin to your JetBrains product.

Installation steps please refer: https://stackoverflow.com/a/53387418/5320704

answered Oct 21 '19 at 11:46

Zhi Yuan

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score 0 · Answer 7 · answered Jun 16 '23 at 15:48

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this plugin is really good: Sketch It!.

answered Jun 16 '23 at 15:48

Halil AKGÜN

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Use IntelliJ to generate class diagram

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